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a latch circuit

A latch circuit, ground voltage technology, applied to electrical components, generating electric pulses, digital-to-analog converters, etc., can solve problems such as reduction

Active Publication Date: 2020-01-03
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While this short circuit current may cause data-dependent ripples on the power supply line, and the data-dependent ripple of the supply voltage may have significant effects on the sensor circuit, for example, the switches in the DAC, these effects may manifest themselves as making Signal-to-Noise Ratio (SNR) and Total Harmonic Distortion (THD) reduction for the desired signal bandwidth

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Embodiment Construction

[0014] Certain terms are used in the description and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" and "comprises" mentioned throughout the description and claims are open-ended terms, so they should be interpreted as "including but not limited to". "Substantially" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. In addition, the term "coupled" includes any direct and indirect electrical connection means. Therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device may be direct...

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Abstract

The embodiment of the present invention discloses a latch circuit, wherein a latch circuit may at least include: an input stage, at least for receiving a clock signal and a data control signal; an amplification stage, coupled to the input stage, powered by a power supply voltage and ground voltage, for outputting data values ​​according to the clock signal and the data control signal; and a clock gating circuit, coupled to the amplification stage, for shutting off when the clock signal has a state transition open a path between the supply voltage and the ground voltage. In real time, embodiments of the present invention may reduce the short circuit current between the supply voltage and ground voltage and / or improve the linearity of the DAC circuit following the latch.

Description

[0001] This application claims the priority of the U.S. provisional application with application number 62 / 161,601 filed on May 14, 2015, and the entire content of the U.S. provisional application is included in this application. 【Technical field】 [0002] The invention relates to the field of integrated circuits, in particular to a latch circuit. 【Background technique】 [0003] In a traditional digital-to-analog converter (Digital-to-Analog Converter, DAC) latch circuit, when the latch circuit outputs another data value (for example, the output data changes from "0" to "1") ) to the DAC, a short-circuit current will be generated between the supply voltage and the ground voltage. While this short circuit current may cause data-dependent ripples on the power supply line, and the data-dependent ripple of the supply voltage may have significant effects on the sensor circuit, for example, the switches in the DAC, these effects may appear as making The signal-to-noise ratio (Sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/66
CPCH03M1/66H03K3/356121H03K3/356191H03M1/0872H03M1/066H03M3/464H03K3/356113
Inventor 何丞谚林育信蔡鸿杰王则坚
Owner MEDIATEK INC